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From: jimb@servitude.mips.com (Jim Bergman)
Newsgroups: comp.sys.mips
Subject: Re: Two M/120 expansion cabinet questions
Message-ID: <862@spim.mips.COM>
Date: 11 Mar 91 19:12:13 GMT
References: <4040@uakari.primate.wisc.edu>
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Reply-To: jimb@servitude.mips.com (Jim Bergman)
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In article <4040@uakari.primate.wisc.edu>, bin@primate.wisc.edu (Brain in Neutral) writes:
|> 1) In our M/120 expansion cabinet, there is a disk drive in the bottom slot,
|> and in the slot above there is a thing that looks like this:
|> 
|> 	- it's a flat metal plate about 5" x 6", 1/8" thick
|> 	- mounted on standard mounting bracket (like that used for the disk)
|> 	- screws onto mounting bracket with 4 1" posts
|> 	- says "Caution hot surface avoid contact
|> 	- bottom of plate has a ribbed metal cylinder glued onto it
|> 	- the cylinder plugs into one of the 4-lead power plugs like those
|> 	  the disk plugs into
|> 
|> What is it?
|> 


This is a resistor load for the particular power supply used in the 
expansion pedestal. There are 2 different vendors used for the power
supply(Acme and Unpower) in the expansion pedestal. When the Acme power
supply is used and there is only 1 peripheral in the expansion pedestal,
an additional load is needed for the the +5 volts. If you add an additional
peripheral or the pedestal has more then 1 peripheral in it, the load plate
assembly should be removed.

|> 2) I need to obtain some extra mounting brackets.  Anyone have a non-MIPS
|> source for them?  (Or a MIPS part number?)
|> 

If you are adding just 1 disk, you can remove the big gold load resistor
off of the mounting bracket (after power is removed) and use this
bracket instead of buying a new one. Otherwise, the mips part number
for just the bracket is 92-00128.

|> -- 
|> Paul DuBois
|> dubois@primate.wisc.edu

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